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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
16/09/1996 |
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Data da última atualização: |
16/09/1996 |
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Autoria: |
BODDEY, R. M.; OLIVEIRA, O. C. de; URQUIAGA, S.; REIS, V. M.; OLIVARES, F. L. de; BALDANI, V. L. D.; DOBEREINER, Johanna. |
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Título: |
Biological nitrogen fixation associated with sugar cane and rice: Contributions and prospects for improvement. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Plant and Soil, Netherlands, v. 174, p. 195-209, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetobacter diazotrophicus and ... Menos15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetoba... Mostrar Tudo |
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Palavras-Chave: |
Acetobacter diazotrophicus; BNF; FBN; Fixacao biologica de nitrogenio; Nitrogen fixing bacteria. |
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Thesagro: |
Arroz; Cana de Açúcar. |
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Thesaurus Nal: |
Herbaspirillum; rice; sugarcane. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02419naa a2200313 a 4500
001 1600502
005 1996-09-16
008 1995 bl --- 0-- u #d
100 1 $aBODDEY, R. M.
245 $aBiological nitrogen fixation associated with sugar cane and rice$bContributions and prospects for improvement.
260 $c1995
520 $a15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetobacter diazotrophicus and ...
650 $aHerbaspirillum
650 $arice
650 $asugarcane
650 $aArroz
650 $aCana de Açúcar
653 $aAcetobacter diazotrophicus
653 $aBNF
653 $aFBN
653 $aFixacao biologica de nitrogenio
653 $aNitrogen fixing bacteria
700 1 $aOLIVEIRA, O. C. de
700 1 $aURQUIAGA, S.
700 1 $aREIS, V. M.
700 1 $aOLIVARES, F. L. de
700 1 $aBALDANI, V. L. D.
700 1 $aDOBEREINER, Johanna.
773 $tPlant and Soil, Netherlands$gv. 174, p. 195-209, 1995.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
01/03/2016 |
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Data da última atualização: |
18/03/2016 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
MORES, M. A. Z.; KUCHIISHI, S. S. |
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Afiliação: |
MARCOS ANTONIO ZANELLA MORES, CNPSA; SUZANA SATOMI KUCHIISHI, CEDISA-Centro de Diagnóstico de Sanidade Animal. |
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Título: |
Formas clínicas e patológicas da salmonelose em suínos no Brasil e extensão do problema. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: BARCELLOS, D. E.; BORTOLOZZO, F. P.; WENTZ, I.; BERNARDI, M. L. Avanços em sanidade, produção e reprodução de suínos. Porto Alegre: Universidade Federal do Rio Grande do Sul, Setor de Suínos, 2015. p. 109-115. |
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Páginas: |
7 p. |
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Idioma: |
Português |
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Palavras-Chave: |
Brasil; Clínica; Doenças; Patologia; Suínos. |
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Thesagro: |
Salmonelose. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00749naa a2200205 a 4500
001 2039140
005 2016-03-18
008 2015 bl uuuu u00u1 u #d
100 1 $aMORES, M. A. Z.
245 $aFormas clínicas e patológicas da salmonelose em suínos no Brasil e extensão do problema.$h[electronic resource]
260 $c2015
300 $a7 p.
650 $aSalmonelose
653 $aBrasil
653 $aClínica
653 $aDoenças
653 $aPatologia
653 $aSuínos
700 1 $aKUCHIISHI, S. S.
773 $tIn: BARCELLOS, D. E.; BORTOLOZZO, F. P.; WENTZ, I.; BERNARDI, M. L. Avanços em sanidade, produção e reprodução de suínos. Porto Alegre: Universidade Federal do Rio Grande do Sul, Setor de Suínos, 2015. p. 109-115.
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Embrapa Suínos e Aves (CNPSA) |
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